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I own a Vizio 42" flat screen tv, model number M421VT and every time I plug it in, the Vizio logo at the bottom begins to blink white, it will do that for about a minute and then the symbol will appea

I own a Vizio 42" flat screen tv, model number M421VT and every time I plug it in, the Vizio logo at the bottom begins to blink white, it will do that for about a minute and then the symbol will appear on the screen and after about a minute the pattern repeats. I have no clue what the problem may be, please help me

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Check for signal input at the HDMI port or Coaxial connection. Check your cables or try a different one. Be sure your signal source is handshaking with the TV set.

Posted on Jun 30, 2015

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Posted on Jan 02, 2017

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SOURCE: Vizio m550nv led lcd tv. Problem began a couple

I had same problem. Unplug set for 10minutes then plug it in and let it go thru it's startup routine.

Posted on Jan 27, 2011

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Vizio m550nv amber light is on but tv will not power on


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When i turn the set on i get back lighting but no image or sound.


Fault at its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Dec 07, 2015 | Vizio M421vt 42-inch 120 Hz Class Edge Lit...

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What might be the problem on my Vizio XVT373SV HDTV that will not turn off and on properly?


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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I have a vizio m421vt when it comes on just the vizio lights up , black screen, can't get sounds, no backlight, buttons on tv dont eork have to unplug from wall


Same thing happened to my Vizio TV. Fixed under warranty, replaced the motherboard. There are actually only 2 boards in the thing, easy to fix.

May 13, 2015 | Vizio Televison & Video

1 Answer

I HAVE A VIZIO 42" TV MODEL#: M421VT, THE LOGO FLASHES AND THEN THE SCREEN SHOWS THE LOGO AND THAT IS AS FAR AS IT GET'S BEFORE STARTING OVER BUT THE BACK LIGHT IS ON! COULD THIS BE A BAD MAINBOARD?


Here is what I would do. Do a google search with the model of the TV with a short description of the problem and hopefully it will lead you to a solution. Unfortunately repairing these TVs that can be bought new for less than 400 dollars is usually not cost effective.

Jan 29, 2015 | Vizio M421vt 42-inch 120 Hz Class Edge Lit...

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TV Vizio VF551xvt. as you turn it on it "blinks" (the screen will turn on and off quickly). the logo stays white as if the tv was on but the screens stays off. how can I repair it?


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.
If blinks continue without any pause, the main board is faulty.

Jan 29, 2015 | Vizio VF551XVT 55 in. HDTV

1 Answer

I have a Vizio E422VA that will get to the Vizio logo screen, hold for about 1 minute then power off with the power light blinking for about 2 minutes. I have replaced the main board, power supply boa


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.

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1 Answer

Vizio logo blinks orange/white for a minute then stops blinking. TV never comes on.


If there was a power surge, a power supply component may have failed.

Jul 01, 2014 | Vizio M550NV 55 in LCD HDTV

1 Answer

Where is the model number on a flat screen tv located


On my VIZIO it is on a white label on the back of the TV.

Feb 20, 2011 | Vizio SV422XVT 42 in. LCD HDTV

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